Name: 人體在太空中會發生什麼 (What Happens To The Human Body In Space)
Uploaded: 2020-11-18T19:10:39.000Z
Duration: 6 min 28 s

In 2016, astronaut Scott Kelly returned to Earth

2016年，太空人斯科特-凱利返回地球。

程度副詞

after nearly a year on the International Space Station.

But when he came back, he was 2 inches taller.

但是當他回來的時候，他又高了兩寸。

and what does that mean for the future of space travel?

這對未來的太空旅行意味著什麼？

If you're planning a trip to the International

如果你正計劃前往國際旅遊，那麼你就會發現，你是一個很好的選擇。

Space Station, be prepared to feel weightless.

空間站，要做好失重感的準備。

The station orbits the planet every 90 minutes,

moving at more than 17,000 miles per hour.

以每小時17000多英里的速度移動。

That's 30 times faster than a commercial jet aircraft.

As a result, astronauts on board live in a constant state

是以，太空人在太空中的生活狀態是恆定的。

Garrett Reisman: Being up there in microgravity is awesome.

Garrett ReismanBeing up there in microgravity is awesome.

because it's like you have the power to fly.

a former NASA astronaut who's logged 107 days in space.

前美國宇航局的太空人，在太空中呆了107天。

There are a few immediate side effects, he says,

Reisman: So the first thing you really feel is

雷斯曼。所以你真正感受到的第一件事是

You don't feel very good those first couple days.

It's kinda like being airsick or seasick.

about your rotation and your acceleration,

they're not working that great without being in gravity.

他們在沒有重力的情況下是不會有那麼大的作用的。

Narrator: Without gravity working on your body,

旁白：沒有地心引力對你身體的影響

your bones and muscles start to break down, too.

In fact, bone density drops by over 1% per month.

事實上，骨密度每月下降1%以上。

for elderly men and women is around 1% to 1.5% per year.

老年男子和婦女每年約為1%至1.5%。

而且，因為它不需要太多的努力。

your muscles lose strength and endurance pretty quickly.

你的肌肉很快就會失去力量和耐力。

So, they scheduled two hours a day pretty much every day

所以，他們幾乎每天都會安排兩個小時的時間。

while I was on the space station for working out.

What we found was, if you do enough resistive exercise,

我們發現，如果你做了足夠多的抵抗性運動。

you can halt the effects of the bone loss

Narrator: Without gravity pulling them down,

旁白：沒有地心引力把它們拉下來

fluids pool in the body, tricking it into thinking

液體在體內積聚，使其誤入歧途。

This makes it easy for them to get dehydrated

Reisman: So, you have a shift in your fluid.

萊斯曼所以，你有一個轉變 在你的液體。

A lot of the blood volume that normally is down in your legs

很多的血量通常是在你的腿部下降

ends up up here, and your chest kinda puffs up

最後在這裡，和你的胸部有點膨大了

and your face puffs up, and you can see it.

而你的臉腫起來，你可以看到它。

If you look at pictures of us on the space station,

如果你看一下我們在空間站的照片。

it looks like we put on some weight or something

它看起來像我們把一些重量什麼的

had a shift in our vision while we're up in space.

我們在太空中的視野發生了變化。

We could see swelling in the optic nerve,

exactly what's causing it and how to stop it.

究竟是什麼原因造成的，如何阻止它。

Narrator: With all the challenges of space travel,

旁白：伴隨著太空旅行的種種挑戰

Reisman: So, yes, you do get taller when you go to space.

Reisman:所以，是的，你確實會變高 當你去太空。

It's the whole reason I signed up for this job.

這也是我報名參加這份工作的原因。

Your spine is being compressed by gravity.

So, when you go into the microgravity environment

所以，當你進入微重力環境時... ...

and you no longer have any kind of compressive loads

而你不再有任何形式的壓縮負荷。

Narrator: Without gravity working against it,

Reisman: There is an effect on the cardiovascular system

So you do get a reduced aerobic capability.

所以你的有氧能力確實有所下降。

and after being up in space for a couple days,

you might get on the treadmill, and you might be like,

你可能會得到在跑步機上， 你可能會喜歡，

"Man, I must not have been hitting the gym."

"夥計，我一定沒有去健身房。"

Narrator: The immune system also takes a hit.

Researchers discovered that a lack of gravity

which play a crucial role in fighting off diseases.

在抵禦疾病方面起著至關重要的作用。

字幕列表影片播放

人體在太空中會發生什麼 (What Happens To The Human Body In Space)

susceptible

immune

trick

psychological